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FOC | Family List | FOC Vol. 9 | Rosaceae | Spiraea

35. Spiraea pubescens Turczaninow, Bull. Soc. Imp. Naturalistes Moscou. 5: 190. 1832.

土庄绣线菊 tu zhuang xiu xian ju

Shrubs 1–2 m tall. Branchlets spreading, slightly bent, yellow-brown to black-brown, pubescent when young, later glabrous; buds ovoid or subglobose, with several scales, pubescent, apex acute or obtuse. Petiole 2–4 mm, pubescent; leaf blade rhombic-ovate to elliptic, 2–4.5 × 1.3–2.5 cm, abaxially gray-pubescent, adaxially pilose, base broadly cuneate, margin deeply incised serrate, sometimes 3-lobed above middle, apex acute. Umbels pedunculate, 2–4.5 × 2–3.5 cm, 15–20-flowered; pedicels 7–12 mm, glabrous; bracts linear, 2–3 mm, pubescent. Flowers 5–7 mm in diam. Hypanthium campanulate, glabrous abaxially. Sepals ovate-triangular or triangular, 1.5–2 mm, erect in fruit, apex acute. Petals white, ovate, broadly obovate, or suborbicular, 2–3.5 × 2–3 mm, apex obtuse or emarginate. Stamens 25–30, nearly equaling petals. Disk annular, 10-lobed; lobes slightly emarginate at apex. Carpels glabrous, or pubescent near base and on adaxial suture; styles shorter than stamens. Follicles spreading, puberulous on adaxial suture or wholly pubescent; styles terminal, slightly divergent or suberect. Fl. May–Jun, fr. Jul–Aug.

Mixed forests, open forests, shady slopes, open or semishaded places, dry rocky slopes; 200--2500 m. Anhui, Gansu, Hebei, Heilongjiang, Henan, Hubei, Jilin, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan [Korea, Mongolia, Russia].

1 Follicles puberulous only on adaxial suture.   35a var. pubescens
+ Follicles wholly pubescent.   35b var. lasiocarpa

Lower Taxa


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